On Thu, Jun 28, 2007 at 08:20:31AM -0400, Chris Mason wrote: > On Thu, Jun 28, 2007 at 04:44:43AM +0200, Nick Piggin wrote: > > That's true but I don't think an extent data structure means we can > > become too far divorced from the pagecache or the native block size > > -- what will end up happening is that often we'll need "stuff" to map > > between all those as well, even if it is only at IO-time. > > I think the fundamental difference is that fsblock still does: > mapping_info = page->something, where something is attached on a per > page basis. What we really want is mapping_info = lookup_mapping(page), lookup_block_mapping(page).... ;) But yes, that is the essence of what I was saying. Thanks for describing it so concisely, Chris. Cheers, Dave. -- Dave Chinner Principal Engineer SGI Australian Software Group - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
